油页岩渣合成β沸石分子筛的研究  

Study on the synthesis of β zeolites from oil shale ash

作　　者：余静文[1] 卓猛[1] 金珊[1] 于廷云[1] 

机构地区：[1]辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001

出　　处：《化工科技》2012年第2期4-7,共4页Science & Technology in Chemical Industry

基　　金：辽宁省教育厅科技项目(2009S064)

摘　　要：对油页岩渣进行一次热活化,再进行热活化与化学活化结合的二次活化,以活化后溶出的硅酸钠为硅源合成β沸石,探讨了一次活化和二次活化的处理工艺。实验表明,一次活化中,油页岩渣中的有机物通过煅烧被氧化除去,加入c(盐酸)=4mol/L时除铁效果最佳,铁的溶出率达到80.2%;二次活化中,一次活化后的油页岩渣与固体NaOH混合煅烧后生成了溶于水的Na2SiO3,碱的加入量为油页岩渣的2倍时,Na2SiO3的回收率达到最大,为82.3%,以溶出的Na2SiO3为硅源合成β沸石,产品无杂晶,结晶度为82%,产率为69.4%。Oil shale ash was treated by two-step activation named thermal activation and thermal-chemical activation to dissolve silicon for the following synthesis of β zeolite.Activation mechanism was studied.During the first activation,low-content organics were oxidized to separate;using the 4 mol/L hydrochloric acid,the leaching rates of Fe3＋ reached 80.2%;during the second activation,by calcining the mixture of NaOH with previously activated oil shale ash,water-soluble Na2SiO3 which used to be silicon source could formed.When the added amount of NaOH was twice as much as oil shale ash,the leaching rates of Na2SiO3 reached 82.3%.β Zeolite with high purity,crystallining of 82%,could be obtained,and its yield reached 69.4%.

关 键 词：油页岩渣 Β沸石 合成 

分 类 号：TQ424.2[化学工程]